Formation and conformational conversion of flattened partial cone oxygen bridged calix[2]arene[2]triazines |
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| Authors: | Wang Qi-Qiang Wang De-Xian Zheng Qi-Yu Wang Mei-Xiang |
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| Institution: | National Laboratory for Molecular Sciences, Laboratory of Chemical Biology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China. |
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| Abstract: | A stepwise fragment coupling reaction starting with substituted dichlorotriazine and resorcinol derivatives gave rise to thermodynamically favored 1,3-alternate tetraoxacalix2]arene2]triazines and kinetically controlled flattened partial cone tetraoxacalix2]arene2]triazines. The flattened partial cone conformer, which was stable due to the steric effect, converted into the 1,3-alternate conformer via ether bond cleavage upon treatment with an inorganic base. |
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